/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RigEditor/SIKRigHierarchy.h
Determine if the element is connected to ANY solver
bool IsElementConnectedToAnySolver ( [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [FIKRigTreeElement](API\Plugins\IKRigEditor\RigEditor\FIKRigTreeElement) > TreeElement )